Flanged Ball Bearings

What Are Flanged Ball Bearings?

Flanged ball bearings are radial bearings with an integrated flange on their outer ring. This flange serves as a built-in mounting aid that simplifies positioning within a housing while helping prevent axial movement under thrust loads. These bearings efficiently support both radial and axial loads and are widely used in applications that require precise alignment, vibration resistance, and easy assembly or disassembly.

Key Structural Features

1. Flanged Outer Ring

The steel flange adds rigidity and allows for more secure positioning within housings, especially in high-vibration or axial load environments.

2. Inner & Outer Raceways

Precisely grooved raceways guide the ball bearings for low-friction rolling, ensuring smooth and efficient rotation even under load.

3. Cage or Retainer

Maintains optimal spacing between balls, reduces friction, and contributes to overall bearing life and performance.

4. Sealing or Shielding Options

Protects against contaminants such as dust and moisture, which can otherwise reduce lifespan and performance in harsh environments.

Types of Flanged Ball Bearings

• Standard Flanged Ball Bearings: Suitable for general-purpose applications requiring axial positioning and simplified mounting.
• Miniature Flanged Ball Bearings: Designed for compact, high-precision devices such as medical equipment and robotics.
• Flanged Bearings with Extended Inner Ring: Provides additional shaft support, better alignment, and higher load capacity.

Material Options

Flanged ball bearings are manufactured using various materials based on application requirements:

• 52100 Chrome Steel: High strength and wear resistance; the industry standard.
• 440C Stainless Steel: Excellent corrosion resistance, ideal for food processing, marine, and chemical environments.
• Ceramic (e.g., Si3N4): Lightweight, corrosion-resistant, and capable of operating at higher speeds and temperatures.

Dimensions of Flanged Ball Bearings

Flanged ball bearings are available in both metric and imperial dimensions to suit a broad range of applications. Below is a general reference range:

	Imperial	Metric
Bore Diameter	0.04688″ – 0.375″	1mm – 50mm
Outer Diameter	0.15625″ – 0.875″	3mm – 72mm
Width	0.0625″ – 0.2812″	1mm – 12mm
Flange Outer Diameter	0.203″ – 0.965″	3.8mm – 7.5mm
Flange Thickness	0.013″ – 0.045″	0.3mm – 2.5mm

Applications of Flanged Ball Bearings

Flanged ball bearings are used across a variety of industries and systems where both radial and axial load support, along with reliable positioning, are essential:

• Elevator and lift systems
• Food processing machinery
• Conveyor systems
• Power transmission assemblies
• Industrial automation and robotics
• Agricultural equipment
• Packaging and labeling machines
• Automotive components

Need Help Selecting the Right Flanged Bearing?

Use our comprehensive Flanged Ball Bearing Cross Reference Chart to quickly find equivalent models and ensure compatibility with your application. Whether you’re replacing an SKF, NSK, or other OEM brand, we offer direct replacements with guaranteed performance.

Conclusion

Flanged Ball Bearings combine high precision, easy mounting, and reliable axial retention, making them ideal for applications that require stability and durability. Their design simplifies both installation and maintenance, helping reduce downtime and increase system efficiency in demanding environments.